Cook pasta as usual, omitting added ingredients such as salt or oil; drain. Once
drained lightly spray pasta with cooking spray.
Heat a Dutch oven over medium-high heat Coat inside of pan with cooking spray.
Add onion and carrot, and sauté for 4 minutes. Add garlic; sauté for 1 minute. Add
ground beef; cook 5 minutes or until browned, stirring to crumble. Add tomato sauce,
1/2 teaspoon salt and pepper. Cook for 2 minutes or until most of liquid evaporates.
Stir pasta into pan with beef mixture. Coat an 11 x 7- inch baking dish with
spray and add pasta and beef mixture.
In a medium saucepan stir milk, flour, nutmeg, and remaining 1/2 teaspoon salt
with a whisk until blended. Continuing stirring with a wisk over medium heat for
2 minutes or until thickened. Add 1 cup cheese, stir until smooth. Pour cheese mixture
over pasta mixture; stir if necessary. Top with remaining 1/2 cup cheese.
350 degrees F for 20 minutes or until lightly browned.